Skip to Content
Merck
All Photos(5)

Key Documents

CRM11994L

Millipore

Listeria monocytogenes NCTC 11994 Lenticule® discs

30-120 CFU, suitable for microbiology, certified reference material, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland

Synonym(s):

L. monocytogenes NCTC 11994 Lenticule® discs, Listeria monocytogenes NCTC 11994 Lenticule® discs, Certified reference material, Microbiological standards

Sign Into View Organizational & Contract Pricing


About This Item

UNSPSC Code:
41116107
NACRES:
NA.24

grade

certified reference material

Quality Level

Agency

ISO 17034
ISO/IEC 17025

form

disc (hydrosoluble)
solid

shelf life

limited shelf life, expiry date on the label

packaging

pack of 10

manufacturer/tradename

Manufactured by: Sigma-Aldrich Production GmbH, Switzerland

application(s)

environmental
food and beverages

microbiology

storage temp.

−20°C

suitability

Listeria monocytogenes
Listeria spp.

Looking for similar products? Visit Product Comparison Guide

General description

Listeria monocytogenes NCTC 11994 Lenticule® discs are Certified Microorganisms Standards (Certified Microbiological Reference Materials) which can be used as quantitative and qualitative control organisms. They contain colony forming units (CFUs) in the range of 30-120 CFU per disc. The technology allows long-term conservation and renders the organisms resistant to temperature changes. They are intended to be used as daily internal quality control organisms. These microorganisms are certified according to ISO/IEC 17025 and produced under reproducible conditions compliant with ISO 17034 using authenticated strains from NCTC. These ready-to-use microbiological controls minimize the need to maintain control strains in the test laboratory and guarantee an authenticated control culture for every quality control test. Lenticule® discs are prepared from a traceable culture obtained freeze-dried from the National Collection of Type Cultures (NCTC) or National Collection of Pathogenic Fungi (NCPF). They are manufactured by Sigma-Aldrich under license from UK Health Security Agency.

Application

Listeria monocytogenes NCTC 11994 Lenticule® discs are used as reference strains in routine quality control for food, beverage, water, and environmental testing. Additionally, they are excellent for use in method development and validations, as starter cultures, and for research studies and educational purposes.

Features and Benefits

  • Ready-to-use at convenient CFU ranges
  • No dilution required
  • Quick rehydration in 10 minutes
  • At least 16-month shelf life in a standard -20 °C freezer
  • Complete with a comprehensive certificate of analysis
  • No maintenance of stock cultures
  • No recovery time or pre-enrichment step is necessary
  • Robust, efficient, and reliable
  • Easy-to-use
  • Cost-effective

Other Notes

Strain origin: NCTC 11994

Other cell culture collections:

  • DSM 15675
  • CECT® 4032
Click here to access the BacDive database for more info on metabolism, genome, growth media, and more
Strain History - Accessioned into the NCTC in 1986 < P. N. Pini (Food Hygine Laboratory, Central Public Health Laboratory, Colindale, London, UK). Isolated from soft cheese, UK, in 1986-85.

Legal Information

CECT is a registered trademark of Universitat de Valencia
Lenticule is a registered trademark of The Secretary of State for Health (United Kingdom)

Storage Class Code

11 - Combustible Solids

WGK

WGK 3


Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Related Content

Explore certified microbiological reference materials: VITROIDS™, LENTICULE® discs by Millipore®. Ideal for food, beverage, cannabis testing. Order today.

Explore certified microbiological reference materials: VITROIDS™, LENTICULE® discs by Millipore®. Ideal for food, beverage, cannabis testing. Order today.

Explore certified microbiological reference materials: VITROIDS™, LENTICULE® discs by Millipore®. Ideal for food, beverage, cannabis testing. Order today.

Explore certified microbiological reference materials: VITROIDS™, LENTICULE® discs by Millipore®. Ideal for food, beverage, cannabis testing. Order today.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service